Intelligent design cannot explain Darwinian evolution. Darwin's whole point is that variation and change are random and without higher purpose. We cannot imagine that God designed this disproof of His own existence.
Evolution is a blind giant who rolls a snowball down a hill. The ball is made of flakes--circumstances. They contribute to the mass without knowing it. They adhere without intention, and without foreseeing what is to result. When they see the result they marvel at the monster ball and wonder how the contriving of it came to be originally thought out and planned. Whereas there was no such planning, there was only a law: the ball once started, all the circumstances that happened to lie in its path would help to build it, in spite of themselves.
Samuel Langhorne Clemens, 1835-1910
We know the laws of trial and error, of large numbers and probabilities. We know that these laws are part of the mathematical and mechanical fabric of the universe, and that they are also at play in biological processes. But, in the name of the experimental method and out of our poor knowledge, are we really entitled to claim that everything happens by chance, to the exclusion of all other possibilities?
Throughout his last half-dozen books, for example, Arthur Koestler has been conducting a campaign against his own misunderstanding of Darwinism. He hopes to find some ordering force, constraining evolution to certain directions and overriding the influence of natural selection. [...] Darwinism is not the theory of capricious change that Koestler imagines. Random variation may be the raw material of change, but natural selection builds good design by rejecting most variants while accepting and accumulating the few that improve adaptation to local environments.
The positive evidence for Darwinism is confined to small-scale evolutionary changes like insects developing insecticide resistance....Evidence like that for insecticide resistance confirms the Darwinian selection mechanism for small-scale changes, but hardly warrants the grand extrapolation that Darwinists want. It is a huge leap going from insects developing insecticide resistance via the Darwinian mechanism of natural selection and random variation to the very emergence of insects in the first place by that same mechanism.
Nature gropes and blunders and performs the crudest acts. There is no steady advance upward. There is no design.
The essence of Darwinism lies in its claim that natural selection creates the fit. Variation is ubiquitous and random in direction. It supplies raw material only. Natural selection directs the course of evolutionary change.
I'm aware of the luck in [BABIP], but at the same time, you can't directly influence it. You can just keep mixing your patterns, executing and locating, That's the human element of this game.
It doesn't take many observations to think you've spotted a trend, and it's probably not a trend at all.
Similarly, another famous little quantum fluctuation that programs you is the exact configuration of your DNA.
The hypothesis that economic organization is the resultant of a series of historic accidents is intructive in that many organizational innovations appear to be the result of trial and error.
The contingency of history (both for life in general and for the cultures of Homo sapiens ) and human free will (in the factual rather than theological sense) are conjoined concepts, and no better evidence can be produced than the "experimental" production of markedly different solutions in identical environments.